Nascent Soul Ancestor in the City

Lin Yuan, the righteous leader of the Immortal Realm, descends into the martial world after a heavenly tribulation triggered by battling a demon lord, only to be framed and given just thirty days to live. Outwardly carefree yet deadly in combat, he leaves his wealthy family after discovering a fake young master stole his place twenty years ago. After escaping further betrayal, he seeks rare herbs to extend his life, establishes a shop to help warriors cultivate, and eventually storms the enemy's stronghold. In the end, he reveals the true culprit is the ancient Demon Ancestor.